c8709dcfd1
In order to reduce the overhead of codegen, this PR switch to use Janino to compile SQL expressions into bytecode. After this, the time used to compile a SQL expression is decreased from 100ms to 5ms, which is necessary to turn on codegen for general workload, also tests. cc rxin Author: Davies Liu <davies@databricks.com> Closes #6479 from davies/janino and squashes the following commits: cc689f5 [Davies Liu] remove globalLock 262d848 [Davies Liu] Merge branch 'master' of github.com:apache/spark into janino eec3a33 [Davies Liu] address comments from Josh f37c8c3 [Davies Liu] fix DecimalType and cast to String 202298b [Davies Liu] Merge branch 'master' of github.com:apache/spark into janino a21e968 [Davies Liu] fix style 0ed3dc6 [Davies Liu] Merge branch 'master' of github.com:apache/spark into janino 551a851 [Davies Liu] fix tests c3bdffa [Davies Liu] remove print 6089ce5 [Davies Liu] change logging level 7e46ac3 [Davies Liu] fix style d8f0f6c [Davies Liu] Merge branch 'master' of github.com:apache/spark into janino da4926a [Davies Liu] fix tests 03660f3 [Davies Liu] WIP: use Janino to compile Java source f2629cd [Davies Liu] Merge branch 'master' of github.com:apache/spark into janino f7d66cf [Davies Liu] use template based string for codegen |
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